Figure 14


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The radial IMF from the OMNI database is plotted against time over 2005–2022, with 3-CR (gray solid curves), and 13-CR (blue dotted curves) smoothing (blue dotted lines), with the signed axial even multipole strengths overplotted (red dashed lines, right axis labels), for KPVT and SOLIS (top), Wilcox (middle) and GONG (bottom) data. The resemblance between the axial quadrupole curves and the radial IMF curve during the cycle 24 polar reversal is clear in each plot, and is much greater than usual during this time.

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